Cadmium-organic coordination polymer Cd5-MOF, and preparation method and application thereof

A coordination polymer, cd5-mof technology, applied in chemical instruments and methods, water/sludge/sewage treatment, water/sewage treatment, etc., can solve the problem that the formation of metal-rich multi-nuclear clusters is difficult to predict, and achieve the preparation method Simple and feasible, high thermal stability effect

Active Publication Date: 2019-02-12
CHONGQING NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation of metal-organic coordination polymers containing more than four-core metal-oxygen clusters has been a challenging project due to the unpredictable formation of metal-rich multinuclear clusters.

Method used

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  • Cadmium-organic coordination polymer Cd5-MOF, and preparation method and application thereof
  • Cadmium-organic coordination polymer Cd5-MOF, and preparation method and application thereof
  • Cadmium-organic coordination polymer Cd5-MOF, and preparation method and application thereof

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Experimental program
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Effect test

Embodiment 1

[0032] The preparation of embodiment 1 coordination polymer

[0033] Take the material according to the following specific mass or volume: H 4 odp (17.3mg, 0.05mmol), bpeb (14.2mg, 0.05mmol), Cd (NO 3 ) 2 4H 2 O (30.8 mg, 0.1 mmol), CH 3 CN (2mL), H 2 O (8 mL), HNO 3(30uL, 7mol / L, 0.21mmol). Put the above materials in a 25mL reactor, stir for about 1 hour, heat up to 120°C, react for 3 days, and cool to room temperature naturally to obtain a crystal sample, which is filtered from the mother liquor, washed with distilled water, and dried naturally in the air to obtain Cd 5 - MOF crystals.

[0034] Among the above-mentioned crystal samples, select a suitable single crystal, carry out X-ray single crystal diffraction analysis to it, and resolve its crystal structure (see figure 1 ). In the asymmetric structure, there are 3 crystallographically independent Cd 2+ Ions (marked as Cd1, Cd2, Cd3 respectively), metal Cd 2+ with carboxylate O, pyridine N and H 2 O forms pent...

Embodiment 2

[0040] The preparation of embodiment 2 coordination polymer

[0041] Take the material according to the following specific mass or volume: H 4 odp (17.3mg, 0.05mmol), bpeb (14.2mg, 0.05mmol), Cd (NO 3 ) 2 4H 2 O (30.8 mg, 0.1 mmol), CH 3 CN (2mL), H 2 O (8mL), HNO 3 (50uL, 7mol / L, 0.35mmol). Put the above materials in a 25mL reactor, stir for about 1 hour, heat up to 120°C, react for 3 days, and cool to room temperature naturally to obtain massive crystals, which are filtered out from the mother liquor, washed with distilled water, and dried naturally in the air at room temperature.

[0042] The product was characterized by powder X-ray diffraction, and the data obtained were similar to those in Example 1. It shows that the crystal structure prepared by Example 2 has not changed and the product is relatively pure.

[0043] This embodiment is repeated several times, and actually obtains Cd 5 -The quality of MOF is maintained at 13.2-18.9 mg, and the yield calculated ba...

Embodiment 3

[0044] The preparation of embodiment 3 coordination polymer

[0045] Take the material according to the following specific mass or volume: H 4 odp (17.3mg, 0.05mmol), bpeb (14.2mg, 0.05mmol), Cd (NO 3 ) 2 4H 2 O (30.8 mg, 0.1 mmol), CH 3 CN (2mL), H 2 O (8mL), HNO 3 (50uL, 7mol / L, 0.35mmol). Put the above material in a 25mL reaction kettle, stir for about 1h, heat up to 135°C, react for 3 days, and cool to room temperature naturally to obtain massive crystals, which are filtered out from the mother liquor, washed with distilled water, and dried naturally in air at room temperature.

[0046] The product was characterized by powder X-ray diffraction, and the data obtained were similar to those in Example 1. It shows that the crystal structure prepared by Example 3 does not change and the product is relatively pure.

[0047] This embodiment is repeated several times, and actually obtains Cd 5 - The quality of MOF is kept at 12.1-18.6 mg, and the yield calculated based on...

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Abstract

The invention relates to the field of heavy metal and advanced functional materials, in particular to a cadmium-organic coordination polymer Cd5-MOF, and a preparation method and application thereof.The composition of Cd5-MOF is {[Cd5(Hodp)2(H2odp)2(bpeb)5(H2O)2](bpeb)2(H2O)2}n, the Cd5-MOF is prepared with a solvent thermosynthesis method, so that product heat stability is good, and yield can reach 75%. The method has the advantages of moderate condition, easiness in operation and high yield. The Cd5-MOF coordination polymer is doped in organic glass, the doped organic glass can be used foradsorbing ultraviolet light and emitting green fluorescence, and the property of the coordination polymer and the preparation method can be used for preparing light transformation materials or green fluorescence acrylics.

Description

technical field [0001] The invention relates to the field of heavy metals and advanced functional materials, in particular to cadmium-organic coordination polymer Cd 5 -MOF, its preparation method and application. Background technique [0002] Since the early 20th century Co 2 (CO) 8 , Fe 2 (CO) 9 , Fe 3 (CO) 12 After the discovery of such compounds, people have carried out extensive and in-depth explorations on metal-rich clusters, which are one of the most concerned substance categories in the fields of chemistry, chemical engineering, materials, and the environment. Metal-oxygen clusters can be understood as molecules or ions or structural units formed based on oxygen atoms bridging limited metal or non-metal atoms. If classified according to the number of metal atoms in the cluster, they can be divided into trinuclear clusters and tetranuclear clusters. Clusters, pentanuclear clusters and other small clusters (3-12), medium clusters (13-40), large clusters, etc., ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G83/00C02F1/62C08L33/12C08L87/00C08J5/18
CPCC02F1/62C08G83/008C08J5/18C08J2387/00C08L33/12C08L87/00
Inventor 黄坤林郭媛媛陈新张如意丁旭萌吴越
Owner CHONGQING NORMAL UNIVERSITY
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